Color

#2f5dda

#2f5dda
hex#2f5dda
rgbrgb(47, 93, 218)
hslhsl(224, 70%, 52%)
oklchoklch(0.524 0.198 264.9)
Closest name: Royal Blue (#4169e1)Relative luminance 0.1349

Colors that go with #2f5dda

Charcoal, Sea Green and Amber lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#daad2f

#2fb2da · #572fda

#da2f5d · #5dda2f

Split-complementary

Open in tool →

#da572f · #b2da2f

#da2fb2 · #daad2f · #2fda57

Contrast

#2f5dda as textRatioAAAA largeAAAFix
Aaon white
5.68:1passpassfail
  • AAA: use #224dc3 as the text (7.2:1)
Aaon black
3.7:1failpassfail
  • AA: use #456ede as the text (4.54:1)
  • AAA: use #7493e7 as the text (7.07:1)
  • AA: or shift the background to #e6e6e6 (4.55:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #2f5dda as the background.

Brands using this color

Fonts for this mood

#2f5dda reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2f5dda
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #2f5dda and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2f5dda-9ca2c4-df724e-221f2d-e9eff1?lock=0&style=vibrant

Want the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.

Machine-readable: color.md